Device for the cold working of heat exchanger tubing for the att

Details Device for the cold working of heat exchanger tubing for the att Device for the cold working of heat exchanger tubing for the att

1978-07-10

1980-03-25

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

72224, 72 78, B21D 1704

Patent

active

041943813

ABSTRACT:
A device for the cold rolling of narrow flat lands on the cylindrical surface of heat exchanger tubing, just prior to the winding onto the tubing of one or more metal strips for the production of finned tubing, the device having pressure rollers on pressure levers carried by a journalled supporting spindle which rotates with the tubing, and a control sleeve inside the hollow spindle which, under the action of a linear actuator, interrupts the rolling action as desired, while the winding operation continues.

REFERENCES:
patent: 359729 (1887-03-01), Lindberg
patent: 569431 (1896-10-01), Sergeant
patent: 1033568 (1912-07-01), Fell
patent: 3431764 (1969-03-01), Kennedy et al.
patent: 3928997 (1975-12-01), Laws

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